Gemini 4 Carbon

Overview

Gemini 4 Carbon is a frontier model based on Gemini 4 Argon, designed for long-horizon agentic work in software engineering, complex knowledge work, cybersecurity, and scientific reasoning. It uses more thinking tokens than Argon for deeper investigation and verification, with configurable thinking levels. (deepmind.google)

Capabilities and uses

Accepts text, images, audio, and video; produces text. Its combined input-and-output context window is up to 1 million tokens. (deepmind.google)
Supports complex coding, debugging, multi-agent engineering, full-stack development, visual and spatial reasoning, document analysis, and preparation of structured reports, spreadsheets, and presentations.
Intended uses include scientific research, financial and legal knowledge work, and cybersecurity defense. Google offers specialized cybersecurity capabilities to verified defenders through its Fairwind Program. (deepmind.google)
Google's Antigravity /swarm feature was announced as a preview for coordinating multiple agents on complex projects. (blog.google)

Availability

Google announced paid Gemini API access through AI Studio and Android Studio, enterprise access through Gemini for business, and rollout to Google AI Ultra subscribers in Antigravity, the Gemini app, and AI Mode in Search. Access and eligibility vary by product and subscription. (blog.google)

Pricing

Google's announced introductory API price for the public-access model is USD $2 per million input tokens and USD $10 per million output tokens. After the introductory period expires on November 30, 2026, the announced price is USD $4 per million input tokens and USD $20 per million output tokens. (blog.google)

Limitations

The model can hallucinate, may occasionally be slow or time out, and can consume more tokens at higher thinking levels. Its knowledge cutoff is March 2026, with potentially older knowledge in some domains. Google continues to improve resistance to jailbreaks and misuse. Outputs, particularly for consequential decisions, should be independently checked. (deepmind.google)

Release dates

Google initially announced Gemini 4 Carbon on October 28, 2026, with limited defender access. The supplied availability announcement is dated November 10, 2026, rather than the input's November 11 date. (blog.google)